Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/8606
Title: Improved energy performance of air-cooled chiller system with mist pre-cooling Mist improvement on air-cooled chillers
Authors: Yu, FW
Chan, KT 
Keywords: Air-cooled chiller
Floating condensing temperature control
Mist pre-cooling
Issue Date: 2011
Publisher: Pergamon Press
Source: Applied thermal engineering, 2011, v. 31, no. 4, p. 537-544 How to cite?
Journal: Applied thermal engineering 
Abstract: This study investigates how to lower the dry bulb temperature of outdoor air via mist pre-cooling to enhance the coefficient of performance (COP) of an air-cooled chiller system. Based on standard chiller models in commercial simulation software DOE-2E, a modified model was made to analyse how the chiller COP varies under two different condensing temperature controls with mist pre-cooling of air entering the air-cooled condenser. Drawing on the model calibrated by manufacturer and operating data, it was estimated that around 18% decrease in the electricity consumption could be achieved by coupling floating condensing temperature control with an optimal mist generation rate, with regard to a chiller system serving a hotel in a sub-tropical climate. Remarks have been made on how optimal mist control can be implemented to maximize electricity savings while reducing surplus mist carrying over the condenser coil.
URI: http://hdl.handle.net/10397/8606
ISSN: 1359-4311
EISSN: 1873-5606
DOI: 10.1016/j.applthermaleng.2010.10.012
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